package com.ecs.to_plc_service.service;

import com.ecs.to_plc_service.domain.ProductOrder;

/**
 * Created by dyh on 2019/4/15.
 */
public interface ProductOrderService {


    /**
     * 下单接口
     * @param userId
     * @param productId
     * @return
     */
    ProductOrder save(int userId,int productId);

}
